用于从水溶液中高效去除六价铬离子的坚固耐用的DUT-67材料。

Shen Yanqiong, Yang Qingsong, Gao Yongqiang, Qian Jinjie, Li Qipeng

College of Chemistry and Chemical Engineering, Zhaotong University, Zhaotong, China.

Shuifu No 1 Middle School, Zhaotong, China.

Front Chem. 2023 Feb 28;11:1148073. doi: 10.3389/fchem.2023.1148073. eCollection 2023.

Robust was synthesized by the hydrothermal method and characterized by powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). To systematically study the removal of Cr(VI) ion by , single-factor, competition ion, material regeneration, kinetic, and thermodynamic experiments were designed. The experimental results show that had a maximum removal rate of 96.1% and a maximum adsorption capacity of 105.42 mg g with material regeneration and outstanding selective adsorption. In addition, the process of removal of the Cr(VI) ion from an aqueous solution by , which accorded with the pseudo-second-order kinetics model and Langmuir model, was studied, and its adsorption mechanism was reasonably explained by the theoretical calculation.

通过水热法合成了Robust，并通过粉末X射线衍射（PXRD）、扫描电子显微镜（SEM）和热重分析（TGA）对其进行了表征。为了系统地研究其对Cr(VI)离子的去除效果，设计了单因素、竞争离子、材料再生、动力学和热力学实验。实验结果表明，Robust在材料再生和出色的选择性吸附方面，对Cr(VI)离子的最大去除率为96.1%，最大吸附容量为105.42 mg g。此外，研究了Robust从水溶液中去除Cr(VI)离子的过程，该过程符合准二级动力学模型和朗缪尔模型，并通过理论计算对其吸附机理进行了合理的解释。